Improvement in tube-well ptimps



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`JAMKEsI-I; DEV-112s `ANnnAruEL GRAVATror PLEASANTVILLE PENNSYLVANIA i"Leners Para: No. 90,157, dated May 18,1869.

The Schedule referred to Zin/'these Letters Patent and making part ofthe same.

` To all whom it may concern;

Be it-known that we, JAMES H. DnviRs and DA N- IEL GRAVATT, oftheborough of Pleasantville, county of Venaugo, and State of' Pennsylvania,have invented certain new and useful Improvements in Pumps; and we dohereby declare that the followingr is a full, clear, and exact'description thereof, reference being had to the` accompanying drawings,which form apart of this In working artesian wells, a frequent source ofannoyance and delay is the `breaking oi' pump-rods and `rivets,which,together with bits of worn-out valvepacking, .often drop into andobstruct the` working of. the pump, and necessitate its `removal. y

Under theprescnt system'thiscan only be done by withdrawing andunooupliug both the pump-rods and tubing, usually1 two'to four hourshard work of `three The object of our invention is toobviate thenecessity of withdrawing the tubing in such cases, by so a1'- rangingthe wearing-surface or working-barrel of the pump, that it can ,bedrawniup inside of the tubing, and lowered again to its seat, Awithoutdisplacing the tubing, and to etlect such removal the more readily, wesubstitute a wire cable for theordinary pump, `or sucker L1-ods."` l Inthedrawingsj Figure 1 represents a vertical section of our improved`pump-barrel; f y

Figure- 2 is a transverse section on line A B; and Figure 3, atransverse section on line C D. a represents the ordinary tubing of thewell, the 'lower joint cof which is provided with an internal shoulder,b, Vat the bottom; and a small ring, or-col' lar, is inserted betweenthe' tubes aand a?, for the purposes hereinafter mentioned. L

d is `a piece of plain tubing, bored smooth on the iuside, to form aworking-barrel for the valves, and made of a little less diameter thantheritubng u, so

"The'outer surface of the lower end'oi" the barrel d,

. and the inner surface of the shoulder b, are turnedn alathe, so as tomake aslightly-taperiug water-tight joint, and the barrel d is droppedor lowered into the `tube a resting upon-thejshoulder b, as shown.

`Upon the upper'end ofthe barrel d, we provide and attach twoor moresprings,e @,vso arranged that when said barrel is lowered to its seat, ashoulder, or projection upon the springs, shall engage with theV lowerprojecting edge ofthe ring, or collar c, and hold the barrel securelydownto its place, while the pump is in motion; i 1 i place a coiledspring,

When in this position, the upper ends of the springs e care curvedinwardly, as shown.

When it becomes necessary to drawout the barrel (l, a small' annularweight, f, /f the sectional form shown, is slipped over the cable at thetop ofthe well, amt-dropping upon thetops ofthe `springs e, presses themtogether, and disengages them from the ring, or collar c, as shown indotted lines, when the barrel d, together with both valves, of thc well,and any defect remedied, Ywithout removing or displacing'the tubing a Inoperating oil and other artesian wells, the pumprods have heretoforebeen made of Wood, (very rarely" of iron gas-pipa). 'cresved togethernsections of from twenty to twentyiivil teet in length. i

These wooden.' rods and theiriron couplings are con- `in drawing out thepump-barrel, or valves with said cable, it is only required to detach itfrom the working-beam, and wind it upon a pulley, or drum, driven bysteam-power, when the valves and barrel can be drawn out, repaired orrenewed,and for pumping, in a few minutes time.

On the upward stroke the cable operates precisely as do the ordinaryrods, but in `order to insure the instant motion of the valve on thedownward stroke, we

lt, within the barrel d, tirmly secured to the barrel at its upper end,the lower end thereof resting upon the valve,- all as shown.

This spring gives the necessary impetus to the valve to overcome anypressure of gas from below, and, as thus arranged, the cable' g servesall the purposes of rigid rodsjwithout their liability to breakage, orloss of time in withdrawal o f valves, &c.

Having thus described our improvements,

replaced, ready W hat we claim as our invention, and *desire to se- Ycure by Letters Patent, is

The described arrangement and combination ofthe detachable inner barrel(I, tube a', springs e e, ring, or Q collar c, and weight j,substantially as and for the purposes set forth.

v JAMES H. DEVIRS.

Witnesses; DANIEL GRAVATT.

A. B. HOWLAND, p H. J. EsLnB. i

may be drawn to the top

